<template>
	<div>
		<!-- 面包屑导航 -->
		<el-breadcrumb separator-class="el-icon-arrow-right">
			<el-breadcrumb-item :to="{ path: '/welcome' }">首页</el-breadcrumb-item>
			<el-breadcrumb-item>商品管理</el-breadcrumb-item>
			<el-breadcrumb-item>商品分类</el-breadcrumb-item>
		</el-breadcrumb>
		<!-- 卡片 -->
		<el-card>
			<el-button type="primary" @click="showAddCateDialog">添加分类</el-button>
			
			<tree-table :data="cateList" :columns="columns" :selection-type="false" :expand-type="false" show-index index-text="#" border stripe :show-row-hover="false">
				<template slot="isok" slot-scope="scope">
					<i class="el-icon-success" v-if="scope.row.cat_deleted===false" style="color: lightgreen;"></i>
					<i class="el-icon-error" v-else style="color: red;"></i>
				</template>
				<template slot="order" slot-scope="scope">
					<el-tag type="primary" size="mini" v-if="scope.row.cat_level===0">一级</el-tag>
					<el-tag type="success" size="mini" v-else-if="scope.row.cat_level===1">二级</el-tag>
					<el-tag type="warning" size="mini" v-else>三级</el-tag>
				</template>
				<template slot="opt" slot-scope="scope">
					<el-button type="primary" icon="el-icon-edit" size="mini">编辑</el-button>
					<el-button type="warning" icon="el-icon-delete" size="mini">删除</el-button>
				</template>
			</tree-table>
			<!-- 分页 -->
			<el-pagination
			      @size-change="handleSizeChange"
			      @current-change="handleCurrentChange"
			      :current-page="queryInfo.pagenum"
			      :page-sizes="[3, 5, 8, 10]"
			      :page-size="queryInfo.pagesize"
			      layout="total, sizes, prev, pager, next, jumper"
			      :total="total">
			    </el-pagination>
			
		</el-card>
		<!-- 添加分类 -->
		<el-dialog
		  title="添加分类"
		  :visible.sync="addCateDialogVisible"
		  width="50%" @close="addCateDialogClosed">
		  <!-- 表单 -->
			<el-form :model="addCateForm" :rules="addCateFormRules" ref="addCateFormRef" label-width="100px">
			  <el-form-item label="分类名称:" prop="cat_name">
			    <el-input v-model="addCateForm.cat_name"></el-input>
			  </el-form-item>
				<el-form-item label="父级分类">
					<el-cascader
					expand-trigger="hover"
					    v-model="selectedKeys"
					    :options="parentCateList"
					    :props="cascaderProps"
					    @change="parentCateChanged" clearable change-on-select></el-cascader>
				</el-form-item>
				</el-form>
		  <span slot="footer" class="dialog-footer">
		    <el-button @click="addCateDialogVisible = false">取 消</el-button>
		    <el-button type="primary" @click="addCate">确 定</el-button>
		  </span>
		</el-dialog>
		
	</div>
</template>

<script>
	export default{
		data(){
			return{
				cateList:[],
				queryInfo:{
					type:'',
					pagenum:1,
					pagesize:5
				},
				total:0,
				columns:[
					{label:'分类名称',prop:'cat_name'},
					{label:'是否有效',type:'template',template:'isok'},
					{label:'排序',type:'template',template:'order'},
					{label:'操作',type:'template',template:'opt'}
				],
				addCateDialogVisible:false,
				addCateForm:{
					cat_pid:0,
					cat_name:'',
					cat_level:0
				},
				addCateFormRules:{
					cat_name:[
						{required:true,message:"请输入分类名称",trigger:'blur'}
					]
				},
				parentCateList:[],
				selectedKeys:[],
				cascaderProps:{
					value:'cat_id',
					label:'cat_name',
					children:'children'
				}
				
			}
		},
		created(){
			this.getCateList()
		},
		methods:{
			async getCateList(){
				const {data:res}=await this.$http.get('categories',{params:this.queryInfo})
				if(res.meta.status!==200){
					this.$message.error("获取数据失败")
				}else{
					this.cateList=res.data.result
					this.total=res.data.total
					// console.log(res.data.result)
				}
				
			},
			handleSizeChange(newSize){
				this.queryInfo.pagesize=newSize
				this.getCateList()
			},
			handleCurrentChange(newPage){
				this.queryInfo.pagenum=newPage
				this.getCateList()
			},
			showAddCateDialog(){
				this.getParentCateList()
				this.addCateDialogVisible=true
			},
			async getParentCateList(){
				const {data:res}=await this.$http.get('categories',{params:{type:2}})
				if(res.meta.status!==200){
					this.$message.error("获取数据失败")
				}else{
					this.parentCateList=res.data
					// console.log(this.parentCateList)
				}
			},
			parentCateChanged(){
				// console.log(this.selectedKeys[this.selectedKeys.lenth])
				// console.log(this.selectedKeys[this.selectedKeys.length - 1])
				if(this.selectedKeys.length>0){
					this.addCateForm.cat_pid=this.selectedKeys[this.selectedKeys.length-1]
					this.addCateForm.cat_level=this.selectedKeys.length
					return
				}else{
					this.addCateForm.cat_pid=0
					this.addCateForm.cat_level=0
				}
			},
			addCate(){
				this.$refs.addCateFormRef.validate(async valid=>{
					if(!valid) return
					const {data:res} =await this.$http.post('categories',this.addCateForm)
					if(res.meta.status!==201){
						this.$message.error("添加分类失败")
						console.log(res)
					}else{
						this.$message.success("添加分类成功")
						this.getCateList()
						this.addCateDialogVisible=false
					}
				})
				
			},
			addCateDialogClosed(){
				this.$refs.addCateFormRef.resetFields()
				this.selectedKeys=[]
				this.addCateForm.level=0
				this.addCateForm.pid=0
			}
			
			
		}
	}
</script>

<style scoped>
	.el-button{
		margin-bottom:  15px !important;
	}
	.el-pagination{
		margin-top: 15px;
	}
</style>
